May want to read the best practices TR below.
Page 20
Create LUNs with SnapDrive for Windows or SnapCenter whenever possible. If you want to create LUNs with DiskManager or other tools, make sure that allocation unit size is set to 64K for partitions during formatting the LUNs.
https://www.netapp.com/us/media/tr-4590.pdf
From: <toasters-bounces@teaparty.net> on behalf of Iluhes <iluhes@yahoo.com>
Date: Wednesday, March 7, 2018 at 4:24 PM
To: "toasters@teaparty.net" <toasters@teaparty.net>, "toasters-request@teaparty.net" <toasters-request@teaparty.net>
Subject: Netapp-_NFS_datastore_VMware__SQL VM__NTFS
that is residing on NFS (not VMFS or RDM) datastore.
Is it still 4K? MS recommendations are for larger size (64K)
NFS datastore!